Drilldown: Patents
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Patents > Office
:
DE
or
DEG
& Filing date:
1800 - 1899
& Supplementary to patent
:
Patent NO-1915-12-15 Carl Alfred Johansson
or
or
None
& CPCs:
CPC B64C33/02 ![](/aero/extensions/Cargo/drilldown/resources/filter-x.png)
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Showing below up to 13 results in range #1 to #13.